ASTROSAT CZTI

Data Quality Report

Orbit 37080

Creation date: 2024-06-27T21:35:18.318985
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A09_138T04_9000005282_37080cztM0_level2.evt modeM0/AS1A09_138T04_9000005282_37080cztM0_level2_quad_clean.evt
Size (bytes)1,201,838,400195,068,160
Size1.1 GB 186.0 MB
Events in quadrant A8,262,6791,219,237
Events in quadrant B9,227,9791,225,604
Events in quadrant C8,106,1721,212,860
Events in quadrant D9,732,2381,158,956

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03260
B03260
C03260
D03260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0343325
B0378384
C0334724
D0399694

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A158151030.651280%
B158155683.591527%
C15815610.385710%
D158153882.453367%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 21246 15819 63 63 0.30% 0.40%
B 21246 15819 370 370 1.74% 2.34%
C 21246 15819 43 43 0.20% 0.27%
D 21246 15818 317 317 1.49% 2.00%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 661045 1785.32 1828 1789 369.3
A 9 143 332441 895.43 1828 1789 369.3
A 7 3 151142 404.46 1828 1789 369.3
B 5 184 1260681 3696.67 1791 1741 340.6
B 5 172 457504 1338.27 1791 1741 340.6
B 5 255 137977 400.03 1791 1741 340.6
C 15 214 661564 1598.89 1779 1796 412.6
C 0 10 183025 439.19 1779 1796 412.6
C 14 254 137958 329.98 1779 1796 412.6
D 2 153 561008 1307.06 1770 1726 427.9
D 1 52 391645 911.25 1770 1726 427.9
D 2 250 372385 866.24 1770 1726 427.9

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter